For 1990-2009 cars only
- Clean the oil pan. Remove all the sludge and the oil deposits.
- Clean the oil pan mating surface.
- Inspect the threads for the engine oil drain plug.
- Inspect the oil pan for cracking near the pan rail and the transmission mounting points.
- Inspect the oil pan for cracking resulting from impact or flying road debris.
- Repair or replace the oil pan as necessary.
